Listen to Robert Emmerich introduce The Big Apple, a hit song from 1937. Music written by Bob and performed by Tommy Dorsey's Clambake Seven with Bob on piano. Lyrics written by Buddy Bernier and sung by Edythe Wright. Audio provided by Dorothy Emmerich.

The “moosli” joke (moo + muesli) has been cited in print since at least 2001.

Wikipedia: MuesliMuesli (/ˈmjuːzli/ or /ˈmuːzli/; Swiss German: Müesli [ˈmyəsli], non-Swiss Standard German: Müsli [ˈmyːsliː]) is a breakfast and brunch dish based on raw rolled oats and other ingredients like grains, fresh or dried fruits, seeds and nuts, that may be mixed with cow’s milk, soy milk, almond milk, other plant milks, yogurt or fruit juice. Developed around 1900 by Swiss physician Maximilian Bircher-Benner for patients in his hospital, muesli is available ready made in a packaged dry form, or it can be made fresh.